I just noticed this on the Levels.stp strip chart: the red line is LL91111, or the "right" magnet space (on the haptarg.adl schematic). It sort of spikes up and settles back down. I can't zoom out much more without losing resolution, and the graph doesn't store info back much further, so in lieu of an explanation it's something for TOs to keep an eye on.
Magnet Dewar LL91111 Doing the Wave